Toad deep disease trenchless repair method based on foam geopolymer
A technology of geopolymers and polymers, applied in the field of non-excavation repair of deep road diseases based on foam geopolymers, can solve problems such as complex underground conditions, elevated road surfaces, local arching, etc., to reduce environmental burdens, The effect of preventing gas from escaping and avoiding road surface arching
Inactive Publication Date: 2021-02-12
湖南省交通科学研究院有限公司
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- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] One problem with the existing grouting methods is that the underground conditions are complex and it is difficult to control the amount of grouting
In order to ensure the repair effect of grouting, the method of excessive grouting is generally adopted. During the process of excessive grouting, the grout is easy to form a shortcut channel to other outlets when it splits and expands underground, resulting in the grout passing through the side slope or peripheral holes. Outflow caused waste, and some small cracks and cavities were not effectively filled
Secondly, the excessive grouting method is also likely to cause road surface elevation and local arching
The existing rough grouting process cannot achieve the ideal repair effect, so now there is an urgent need for a fine grouting process that can effectively fill and repair deep pavement diseases
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment example 1
[0053] Implementation Case 1 Foam Geopolymer Material Preparation
[0054] A kind of foam geopolymer material used for road deep disease treatment, its composition is shown in table 1
[0055]Table 1 Components for the preparation of indoor foam geopolymer materials
[0056]
[0057] Among them, components A and B are prepared separately, and then aerated and stirred at a high speed to obtain a slurry. After curing, the dry density is 663kg / m³, and the 7d compressive strength is 10.9Mpa.
Embodiment example 2
[0058] Implementation case 2 is a repair case of foam geopolymer trenchless grouting
[0059] refer to Figure 1~Figure 3 Schematic diagram of the rotating hole and grouting structure, the specific construction steps are as follows:
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Abstract
The invention discloses a road deep disease trenchless repair method based on a foam geopolymer. The road deep disease trenchless repair method comprises a road deep disease trenchless repair construction process and a corresponding foam geopolymer repair material. The trenchless repair construction process for the deep road diseases comprises a large-hole and small-hole spaced grouting method, main diseases are repaired by compacting, splitting and grouting large holes from bottom to top, and fine diseases are repaired by permeating small holes from top to bottom. The situation that waste iscaused by excessive grouting during single grouting, and some small cracks and holes are not effectively filled can be effectively avoided. The invention also provides a foamed geopolymer grouting material for road grouting reinforcement, the grouting material is divided into a component A and a component B, and has the characteristics of low density, high strength, good durability and no shrinkage after being cured, the density can reach 600-700kg / m<3>, and the 7-day compressive strength can reach 10-12MPa.
Description
technical field [0001] The invention relates to the technical field of road maintenance, in particular to a non-excavation repair method for deep road diseases based on foam geopolymer. Background technique [0002] At present, most of the high-grade highways that have been built and planned to be built in my country are semi-rigid base asphalt pavement, which is prone to deep-seated diseases such as cracks, looseness, pumping, voiding, subsidence, insufficient subgrade strength, and subgrade slippage. The traditional treatment measures, that is, excavation treatment, have many disadvantages: high cost, serious waste, affecting traffic, polluting the environment and so on. The non-excavation treatment technology for deep-seated diseases is to take active measures to drill holes in the road surface and inject repair materials to repair deep-seated diseases. This method has minimal damage to the expressway, short construction period, low cost, little impact on expressway traf...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C04B28/00C04B38/02C04B22/04C04B18/08C04B18/14E01C23/10C04B111/72C04B111/70
CPCC04B28/006C04B22/04C04B18/08C04B18/141E01C23/10C04B2111/72C04B2111/70C04B14/106C04B18/146C04B22/002C04B2103/302C04B24/2652C04B24/16C04B24/38C04B24/02C04B24/32C04B24/121C04B2103/48C04B2103/22C04B12/04C04B22/062C04B24/2623C04B24/42C04B38/10C04B38/02Y02W30/91Y02P40/10
Inventor 陈宇亮曾辉谢海秋刘至飞吴开李婷玉彭孝南任毅
Owner 湖南省交通科学研究院有限公司